One of the few closed-source applications I can't do without. They have a very fair pricing model that's designed with their user base in mind. Live productions are seasonal and / or short-lived and the company understands that users (individuals, theatre companys, venues etc.) likely don't need a licence for every day of the year. They allow you to rent licenses (split into audio, video, lighting) by the day AND 100% of every rental goes towards store credit. I recently used years of store credit to buy a full video licence for the first time. I'd like to thank QLab for making an incredible piece of software with such a fair and thought out pricing model!